stuber



y 23, 1933- 'w. STUBER CALCULATING'MACHINE 3 Sheets-Sheet 1 Filed July Ma '23, 1933. w STUBgR 1,910,571

CALCULATING MACHINE Filed July 28, 1928 3 Sheets-Sheet 2 May 23, 1933. w. STUBER 1,910,571

CALCULATING nucmma Filed July 28. 1928 s Sheets-Skeet 3 iffy.

- 4o lever,

Fig. 6 is an end elevation of the lever,

Patented May '23, 1933 UNITED STATES PATENT OFFICE mm! ST'UBER, OF CANNB'IA'IT, GERMANY, ASSIGNQR '10 MAUSER-W'ERKE L-Gu, 01' onmnoar-on-ma-mwxan, GERMANY cmr:

Application filed July 28, 1988, Serial No. 296,050, and in Germany .l'uly 28, 1927.

My invention relates to calculating machines, and more particularly to machines of the ty e in which ten keys are provided and which have a rinting mechanism, al-

though I do not wish to be limited to a combined calculating and printing machine and no printin mechanism will be described in the following specification.

It is an object of my invention to improve a machine of this type, particularl with respect to its tens transfer, to wit, t e mechanism which upon addition or subtraction causes, when a given totalizer wheel has been operated, the wheel at the left or at the right of that wheel to be rotated when zero is over or understepped.

To this end I provide positive and absolutely reliable means for effecting the tens transfer which areso designed as to result in a very compact mechanism, provide excellent facilities for su porting the fingers by which the tens trans er is operated, and are particularly favourable with respect to quantity production.

In the drawings afiixed to this specification and forming part thereof a totalizer embodying my invention is illustrated diagrammatically by way of example at the scale of about 2 times its real size.

In the drawings,

Fig. 1 is a longitudinal vertical section of the totalizer,

Fig. 2 is a section on the line II--II in Fig. 1, r 36 ig. 3 is an end elevation viewed from the riht in Fig. 1 I

ig. 4 is a plan view showing a detail of the mechanism,

Fig. 5 is an elevation of a tens-transfer viewed from the left in Fig. 5, and

Fig. 7 is another detail of the mechanism. Referring to the drawings, the totalizer comprises two frame plates 32 and 33 which may be fulcrumed on the machine by pins 41, and are connected by stays 8, 10', 17, 37 and 46, brackets 34, 34 and a stay 21 between such brackets, it being understood that the pin 41 and the bracket 34 which are shown at the plate 32 in Fig. 1, are duplicated at the opposite plate'33. 22b is a shaft extending through the frame from end to end and projecting at the left of the frame beyond its plate 33, where a handle, a gear wheel, a pulley or any other part, not shown, for imparting rotation to the shaft 22?), is keyed or otherwise secured on the shaft 22?) so as to rotate in unison therewith. Keyed on theshaft 226 are disks 22a which are recessed at one end, as best seen in Figs. 2 and 4, and flat plates 23, each with a pair of teeth 23 which are inserted between the recessed disks 22a. In this manner the disks 22a and the disks 23' make up a cylinder 22 which rotates with the shaft 226. 220 is a pin extending through all disks and plates 22a and 23' on the cylinder 22 by which they are held in a predetermined relative position. Each disk 22a is provided with a pair of fingers 24 and 25, the finger 24 being shown in Figs. 2 and 4. The fingers are mounted to rock about pins 29, 29 in the disks 22a. 36, are pins arranged in pairs at opposite sides of the fingers 24 and 25 and pro ectin in to the recessed portions of the disks, as best seen in Fig; 4.

1, 1 are dial wheels w ich are free to rotate on the stay 46, each wheel bearing on its perimeter the digits 0 to 9, and an abutment 2 in the vicinity of the digit 0. The abutments 2 are inserted in slots 44 of the respective dial wheels 1, and held therein by screws 45. 3 is a U-shaped frame or bar which is fitted to rock about the stay 8 and provided with a handle 3. This frame or bar cooperates with the abutments 2, for instance, when printin sums, the rinting mechanism being set or the sum which has been calculated while the dial wheels are 90 set to The number of dial wheels 1 is equal to the maximum number of digits in the machine. Each dial wheel 1 is provided with a pinion 5 on one side and with a cam plate 4 having a cam 35 on the other, the pinion and the cam plate on either side of the dial wheel being connected by rivets or pins 43.

6 aregear wheels which .are free to rotate on the stay 37, each wheel meshing with one of the pinions 5 while on the other side of the stay 37 its teeth are adapted to be enga ed b the fingers 24, 25 of the correspon ing isc 22a in the cylinder 22. 7 are tens-transfer levers which are also adapted to rock about the stay 8, one lever being provided for each cam plate 4 and equipped with a rojection 11 which is adapted to be enga (l by the projection 35 of the correspon ing cam p ate, as will appear from Fig. 1. The lever 7 is recessed at 38 so as not to be interfered with in its rocking movement by the stay 37 and the bosses of the wheels 6. 13 is a V-shaped surface at the end 12 of the lever 7.

16 are double-armed pawls which are free to rock on the stay 17, one pawl being ar.- ranged for each tens-transfer lever 7, equipped with two notches 14, for the reception of the end 13 of the lever 7 at one end and a projection 18 at the other end, and connected with a pull-back spring 20 at the other end. Each spring 20 is threaded in a hole 19 at the end of its pawl 16, and all springs are anchored on the stay 21 with their free ends.

9 are overthrow detents which are arranged to rock on the stay 8 under the action of springs 10 which engage holes 9a in the detents 9, and are anchored at the stay 10'. A detent 9 is arranged for each gear and pinion unit 5, 6 and provided with proections 9b and 90 for alternately engaging tween the teeth of the gear wheel 6. Normally, the detents are held with their projections 95 enga 'ng the teeth of the corresponding gear 6 ut when the gear is rotated by means which will be described, the projectlon 9b'is moved out of the teeth of the gear wheel 6 and at the same time the prl'pjection 9c is caused to engage its teeth.

. is will occur after the gear wheel 6 has rotated through one half of its itch and in this manner overthrowin o the dial wheels 1 is revented when t e machine is operated at 'gh speed.

Each tens-transfer lever 7 is provided with a cam 47 having two inclined cam faces 26, 27 at the side which is facing the roller 22, the cam faces forming aroofshaped art as viewed from the left in Fig. 1, and 4 a is a narrow projection on the cam which engages in the recesses of disks 220. as shown in Fig. 2.

The pawls 24 and 25 are arranged in radial recesses of the corresponding discs 22a and are fitted to rock about pins 29 which extend at right angles to the respective pawls 24 and 25. Each disc has a pair of pawls 24 and 25 and the pawls are itched at an angle not uite 180 degs. in t e successive dlSCS, so t at the last pawl is at an angle of about 140 dogs. to the first pawl. The pawls are free to rock within their recesses, as shown for the pawl 25 in Fig. 2, and are held against one wall of their respective recess by means of a spring controlled iston 30 which is seated in a bore of the iso 22a. This is the normal or inactive position of the pawls in which they do not an age the teeth of the gear wheels 6 so that t e rotation of the roller 22 is not transmitted to the corresponding gear wheel 6. ,The pawls 24, 25 are staggered in the several discs 22a. Viewed from the front of the machine, that is, from the ri ht in Fig. 1, the row of pawls 24 for a dition rises from the right end to the left end of the roller 22 and the row of pawls 25 for subtraction rises from the left end to the right end of the roller 22, so that the two sets of pawls make up two helical lines of opposite hands, which intersect at the cen tre of the roller.

On the side which is opposite the fingers 24, 25, each disc 22a is rovided with two cams 23, 23 which are a apt/ed to cooperate with the projection 18 at the end of the corresponding pawl 16. The arm of the pawl 16 at whose end the projection 18 is formed, is preferably curved substantially to the arc of a circle aboutthe axis of the rotary cylinder 22. Preferably, the cams 23 are formed on separate cam plates 23 between the discs 22a.

Each gear wheel and pinion unit 5, 6 is combined with a change-over wheel 39 which may alternately assume the positions indicated in full and in dotted lines in Fig.

1. Racks 40 are provided for operating the totalizer and are moved to the left for winding up\the totalizer mechanism, Fig. 1 showing t e final position of a rack after the totalizer has been wound up. By rocking the totalizer frame on its fulcrum pins 41, 42, the gear wheel 6 or the pinions 5 are caused to mesh with the change-over wheels 39 according to whether such wheels are in the position shown in full lines or in dotted lines.

The operation of the totalizer is as follows When the cam 35 on any of the dial wheel units 1 4, 5 moves past. the position corresponding to the digit 9, the tens-transfer lever 7 of this unit is moved into its active position by the cam 35 pushing the lever to the left in Fig. 1, throwing over the face 13 at the end 12 of the lever from the notch 14 into the notch 15 of the corresponding one digit.

cylinder 22 in a given direction, one of the pawl 16 and movin the cam 47 with its inclined faces 26, 2 within reach of the fingers 24, 25 and the ins 36, 36 on the corresponding disc 22a. e direction in which the dial wheel is rotated de ends on the operation which is performed, ing, for instance, clock-wise for addition, and anticlock-wise for subtraction. For either direction, the direction in which the lever 7 is rocked about the stay 8 by the cam 35 engaging its projection 11, is obviously the same.' The cylinder 22 is now rotated through 180 degrees in a direction corresponding to the operation performed, addition or subtraction, one of the fingers 24, 25 is engaged by one of the inclined faces 26 or 27, according to the direction in which the cylinder 22 is rotated, and placed in co operative relation with the teeth of the corresponding gear wheel 6 so that the gear wheel and consequently the pinion 5 of the corresponding dial wheel 1, rotates throu h Upon further rotation of t e pins 36 strikes the cam 47 on the lever 7 and moves the end 13 of the lever from the notch 15 to the notch 14 in its pawl in which it is held by the spring 20. During the trans fer, that is during the rotation of the cylinder'22, one of the cams 23 on the correposite the projection 18 on the pawl 16 so that the pawl 16 is held against rotation about its stay 17 and the lever 7 is securely held in the notch 15.

Whenthe cams 23 release the pawl 16 the pawl is'free to rock about its stay 17 against the action of spring 20 as the end 13 of the corresponding tens-transfer lever 7 changes from one of the notches 14, 15 to the other,

The movement of the pawls 16 in this direction is limited by their projections 18 shutting against the perimeter of cylinder 22.

While the gear wheel 6 rotates, the overthrow detent 9 is moved out of the teeth of the gear wheel, its projection 96 being raised, and the projection 90 en aging the teeth of the ear wheel after it a as moved through one' alf of the pitch of the teeth. In this manner, the projection 90 will enter an interstice between two teeth of the same gear wheel 6 and prevent overthrowing of the corresponding dial wheel 1 when the machine is operated at high speed.

I wish it to be understood that I do not desire to be limited to the exact details of construction shown and described for obvious modifications will occur to a person skilled in the art.

I claim 1. A calculating machine having a totalizer, dial wheels in said totalizer, a gear wheel operatively connected to each dial wheel, and a tens-transfer mechanism comprising a rotary cylinder, a pair of movable fingers r wheel on said 0 linder a tens-tran zfer l ver per pair of fingers which tens-transfer lever is ada ted to place one of the fingers at a time in active position with respect to the teeth of the correspondrmg gear wheel, means controlled bythe dial wheel corresponding to each pair of fingers for placing the corresponding tens-transfer lever in active position with respect to the fingers of the corresponding pair, a pawl per tens-transfer lever with a pair of notches for engaging and holding said tens-transfer lever in two positions, means operatively connected to said pawl for movin its notched portion into engagement wit said tenstransfer lever, a projection on the pawl, and a pair of cams per pawl on said cylinder adapted to cooperate with said projection so as to hold said pawl against movement during the tens-transferring operation, and itchedapart so as to receive said projection in their interstice for releasing said pawl.

2. A calculating machine having a totalizer, dial wheels in said totalizer, a gear wheel operatively connected to each dial wheel, and a tens-transfer mechanism comrising a rotary cylinder, a pair of movable gers per gear wheel on said cylinder, a tens-transfer lever per pair of fingers which tens-transfer lever is adapted to place one of the fingers at a time in active position with respect to the teeth of the corresponding gear wheel, means controlled by the dial wheel corresponding to each (pair of fingers for placing the correspon ing tens-transfer lever in active position with respect to the fingers of the corresponding pair, a pawl per tens-transfer lever with a pair of notches for engaging and holding said tenstransfer lever in two positions, means operatively connected to said pawl for moving its notched portion into engagement with said tens-transfer lever, a projection-on the pawl, and a pair of cams per pawl on said cylinder adapted to cooperate with said projection so as to hold said pawl against movement during. the tens-transferring operation, and pitched apart so as to receive said pro'ection in their interstice for releasing sai pawl, the projection of said pawl bein adapted to bear on said cylinder in sai interstice.

3. A calculating machine having a totalizer, dial wheels in said totalizer, a gear wheel operatively connected, to each dial wheel, and a tens-transfer mechanism comprising a rotary cylinder, a pair of movable ngers per gear wheel on said cylinder, a tens-transfer lever er pair of fin ers which tens-transfer lever is adapted to p ace one of the fingers at a time in active position with respect to the teeth of the corresponding ear wheel, means controlled b the dial w eel corresponding to. each pair of fingers for placing the corresponding tens-transfer its lever in active position with respect to the fingers of the corresponding pair, a doublearmed rockin pawl per tens-transfer lever with a pair 0 notches atone end for engaging and holding said tens-transfer lever in two positions, a projection on the other end of the pawl, said other end being curved substantially to an arc of a circ e about the axis of said rotary cylinder, and a pair of' cams per pawl on said cylinder adapted to cooperate with said projection so as to hold said pawl against movement durin the tens-transferring operation, and pitched apart so as to receive said projection in their intersticc for releasing said pawl.

1. A calculating machine having a totalizer, dial wheels in said totalizer, a gear wheel 'operatively connected to each dial wheel, and a tens-transfer mechanism comprising a rotary cylinder, a pair of movable ngers per gear wheel on said cylinder, a tens-transfer level per pair of fingers which tens-transfer lever is equip d with cam faces adapted to co'o crate with said fingers for placing one of t e fingers at a time in active position with respect to the teeth of the corresponding gear wheel, means controlled by the dial wheel corresponding to each pair of fingers for placing the correspondin tens-transfer lever in active po sition with respect to the fingers of the corresponding pair, a awl er tens-transfer lever with a pair 0 notc es for engaging and holding said tens-transfer lever in two positions, means operatively connected to said pawl for moving its notched portion into engagement with said tens-transfer lever, a projection on the pawl, and a pair of cams per pawl on said cylinder adapted to cooperate with said pro ection so as to hold said pawl against movement durin the tenstransferring operation, and pitc ed apart so as to receive said pro action in their interstice for releasing sai awl.

5. A calculating maciiine having a totalizer, dial wheels in said totalizer, a gear wheel operatively connected to each dial wheel, and a tens-transfer mechanism comprising a rota cylinder built u from a plurality of di s, a pair of movab e fingers on each disk, a sprin in a reces of disk for engagin a nger of the ad'acent disk, a tens-trans er lever per pair of ngers which tens-transfer lever is adapted to place one of the fingers at a time in active position with respect to the teeth of the corresponding gear wheel, means controlled by the dial wheel corresponding to each pair of fingers for placing the corresponding tens-transfer lever in active position with respect to the fingers of the corresponding pair, a pawl per tens-transfer lever with a pair of notches for engaging and holding saidvtens-transfer lever in two positions means operatively connected to said paw 

